Quietest dedicated subsonic suppressor

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Landry308
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Quietest dedicated subsonic suppressor

Post by Landry308 » Mon May 16, 2022 12:57 pm

Just ordered a Q Mini Fix. I am wanting a dedicated suppressor for SUBSONIC specifically. I am inclined to just keep the gun all Q and get a Thunder Chicken, unless there is something significantly quieter ? FRP is a major concern. It's been a few years since I have done much 300 Blackout shooting, back then most of the 30 cal cans I tried had significant FRP.
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BJK
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Re: Quietest dedicated subsonic suppressor

Post by BJK » Thu May 19, 2022 12:49 pm

My understanding is that FRP comes from having oxygen in the can. After the first shot, the can is full of propellant gas and no O2. I can't answer your question directly about other suppressors less prone to FRP, but you might keep a can of "other gas" on hand and fill the suppressor with it before shooting.

FWIW, I went to Amazon and did a search for canned nitrogen gas and found argon wine preservation gas which would do the job.

Suputin221
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Re: Quietest dedicated subsonic suppressor

Post by Suputin221 » Thu May 26, 2022 8:53 pm

If FRP is a huge issue, a bit of coolant in the blast chamber will eliminate that. Doesn't take much. I have spit in the back of a can. Water or spit is cheaper and more convenient than compressed nitrogen or argon.

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Re: Quietest dedicated subsonic suppressor

Post by Tugnut » Wed Sep 14, 2022 12:02 pm

Any updates on this topic?

I'm looking for similar, real-world experience. From my online dive into it, it seems that the CGS Hyperion and TBAC Magnus are the quietest, but that's if you trust manufacturer's 'testing' and pew science. But suppressor manufacturers have a long history of hyperbole, BS, fudging numbers, cat-fighting, and shilling. Whenever money changes hands, dishonesty abounds. So I don't trust them at all.

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Re: Quietest dedicated subsonic suppressor

Post by Tugnut » Wed Sep 14, 2022 12:02 pm

Any updates on this topic?

I'm looking for similar, real-world experience. From my online dive into it, it seems that the CGS Hyperion and TBAC Magnus are the quietest, but that's if you trust manufacturer's 'testing' and pew science. But suppressor manufacturers have a long history of hyperbole, BS, fudging numbers, cat-fighting, and shilling. Whenever money changes hands, dishonesty abounds. So I don't trust them at all.

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Re: Quietest dedicated subsonic suppressor

Post by TRshootem » Wed Sep 14, 2022 2:26 pm

In a related issue, we used to put a water bottle cap full of water in the can before firing that first round. This was in a Single shot .50 Alaskan. He did this to also demonstrate to other shooters how to do so before taking a stalked game animal. It worked well and I have done so in my 300 BLK with supers and subs.

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dellet
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Re: Quietest dedicated subsonic suppressor

Post by dellet » Wed Sep 14, 2022 4:53 pm

I find it easier to develop a load for any given combination.

What’s quietest in a 10” carbine gassed barrel, may be the loudest in a 6” pistol gassed barrel.

Remember that much of what you are hearing as the shooter, is coming out the ejection port and has little to do with the suppressor. That noise is regulated by bolt speed and unlock time.
300 Blackout, not just for sub-sonics.

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Re: Quietest dedicated subsonic suppressor

Post by Tugnut » Wed Sep 14, 2022 5:17 pm

dellet wrote:
Wed Sep 14, 2022 4:53 pm
I find it easier to develop a load for any given combination.

What’s quietest in a 10” carbine gassed barrel, may be the loudest in a 6” pistol gassed barrel.

Remember that much of what you are hearing as the shooter, is coming out the ejection port and has little to do with the suppressor. That noise is regulated by bolt speed and unlock time.
Absolutely true when talking about semi-autos. My test beds are a 22" Rem 700 I had rebarreled to 300 Whisper back in 2002 and a Ruger American Ranch rifle. I have the crappiest of crappy 308 suppressors from 1999 (currently being remedied by Ecco), and found I could make even that lousy can sound good with Unique, VVN320, Titegroup, and 700x back in the day.

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